Thousands of chairs and desks involved in prank

June 5, 2008 4:46:23 AM PDT

NYACK, N.Y. (AP) - June 5, 2008 --

Suburban New York students who decided to play a prank by removing thousands of desks and chairs from classrooms had the tables turned on them when someone later arranged the furniture to look like a penis.

About 100 students in Nyack High School's annual senior prank Tuesday night lined up the furniture in the shape of a giant "2008" on a field behind the school. But another group later used it to fashion a penis, which other students and teachers found the next morning.

Seventeen-year-old senior Erin Cummings says it was upsetting to see her classmates' hard work turned into a huge penis even though many other students thought it was hilarious.

Principal Daniel Nicholson says he authorized the "2008" shape. He and police say the penis shape was just another prank so they're not investigating.